Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f2cd51b3cdca30…

MALICIOUS

PDF

45.2 KB Created: 2020-08-06 04:05:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abc9aac0f63301cb362f1d55f863d455 SHA-1: b23548d3de859c7301bbd21e12685a5974fc3ebb SHA-256: 97f2cd51b3cdca3096acbd9cab98f038cdc5f310d2fb4e4c1fde654512fb94d9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a known malicious redirector, disguised with a lure of a '12th zoology practical manual pdf 2020'. The ML classifier strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=12th+zoology+practical+manual+pdf+2020 In PDF document text
    • http://files.gracekuchmusic.com/uploads/1/3/1/4/131453559/jeboli-devumewu.pdfIn PDF document text
    • http://files.miortuk-alaskan-husky-kennel.com/uploads/1/3/1/0/131070476/sepid.pdfIn PDF document text
    • http://files.tidewatersoaring.org/uploads/1/3/1/4/131437834/1683387.pdfIn PDF document text
    • http://lotofag.footballinmyblood.com/uploads/1/3/0/7/130776485/posexasadowipal.pdfIn PDF document text
    • http://files.kegcreeksales.com/uploads/1/3/2/6/132683014/3714673.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/betowiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/budux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/derevamefizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/88252987170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/besotedotukutapape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/cambridge_pet_speaking_test_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zorosibal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8272/files/10836947291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/34648525563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2149/2643/files/xogolepizipekeju.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6386 5540 bytes
SHA-256: c46fb9034f398d9bf3c1ead5e9306e0ed9b807544ec9d8d2f22eb15ca50c99b9
font_01_sfnt_off0000763a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763A 10388 bytes
SHA-256: 282de1566b698d849e8ea071f126aaa55452436947ee9ee5d7105a5421f13ca0
font_02_sfnt_off000099ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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